Synthesis and Characterization of Fe3O4/rGO Composite as CO2 Adsorbent in Carbon Capture, Utilization, and Storage (CCUS) Application Indra Adinata (a) and Tirta Rona Mayangsari (a*)
a) Department of Chemistry, Faculty of Science and Computer, Universitas Pertamina
Jl. Teuku Nyak Arief, Kebayoran Lama, Jakarta 12220, Indonesia
*tirta.rm[at]universitaspertamina.ac.id
Abstract
The global warming and climate change have been the serious problems in the world, which caused by greenhouse gases, such as CO2, CH4, CFC, and N2O. Among them, CO2 has the biggest threat to the environment because its high concentration in the atmosphere. To reduce the rate of CO2 emission, carbon capture, utilization and storage (CCUS) technology has been developed by many researchers around the globe. In this work, Fe3O4/rGO composite was prepared by ultrasonication-assisted chemical co-precipitation method to be utilized as CO2 adsorbent. This material was characterized by using XRD, FTIR, SEM and BET. The XRD result of Fe3O4/rGO composite shows the main peaks at 2 theta 18.33(deg), 30.14(deg), 35.57(deg) and 43.10(deg), which have the same character with Fe3O4 pattern. A broad peak at 2 theta 24.40(deg) that correspond to rGO was observed as well, indicating Fe3O4/rGO composite was successfully formed. FTIR spectra for Fe3O4/rGO composite shows an absorption band at wavenumber 569.56 cm-1 (Fe-O), a broad peak at wavenumber 3419.06 cm-1 (O-H), and weak intensity peaks at wavenumbers 1612.04 cm-1 (C=C) and 1190.63 cm-1 (C-O-C), refers to the existence of rGO. The morphological characterization results by using SEM shows the insertion of Fe3O4 particle in the rGO sheet. CO2 adsorption performance of this adsorbent will be investigated by using BET and FTIR instruments.
Keywords: Fe3O4, rGO, Fe3O4/rGO composite, CO2 adsorption
